A myth created by schools to make you behave.
Little do most people know is that your records from one school gets erased after you change schools. The only thing you should REALLY worry about is getting good grades. This doesn't mean you can misbehave like a maniac because you can get a red letter which will mean you're fucked for colleges/universities opportunities.

"I want my records to be clean"
"You and I both know that there's no such thing as a 'Permanent Records'"